checkpoints.h

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// Copyright (c) 2014-2022, The Monero Project
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//    of conditions and the following disclaimer in the documentation and/or other
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
 
#pragma once
#include <map>
#include "misc_log_ex.h"
#include "crypto/hash.h"
#include "cryptonote_config.h"
#include "cryptonote_basic/difficulty.h"
 
#define ADD_CHECKPOINT(h, hash)  CHECK_AND_ASSERT(add_checkpoint(h,  hash), false);
#define ADD_CHECKPOINT2(h, hash, difficulty)  CHECK_AND_ASSERT(add_checkpoint(h,  hash, difficulty), false);
#define JSON_HASH_FILE_NAME "checkpoints.json"
 
 
namespace cryptonote
{
  class checkpoints
  {
  public:

    checkpoints();

    bool add_checkpoint(uint64_t height, const std::string& hash_str, const std::string& difficulty_str = "");

    bool is_in_checkpoint_zone(uint64_t height) const;

    bool check_block(uint64_t height, const crypto::hash& h, bool& is_a_checkpoint) const;

    bool check_block(uint64_t height, const crypto::hash& h) const;

    bool is_alternative_block_allowed(uint64_t blockchain_height, uint64_t block_height) const;

    uint64_t get_max_height() const;

    const std::map<uint64_t, crypto::hash>& get_points() const;

    const std::map<uint64_t, difficulty_type>& get_difficulty_points() const;

    bool check_for_conflicts(const checkpoints& other) const;

    bool init_default_checkpoints(network_type nettype);

    bool load_new_checkpoints(const std::string &json_hashfile_fullpath, network_type nettype=MAINNET, bool dns=true);

    bool load_checkpoints_from_json(const std::string &json_hashfile_fullpath);

    bool load_checkpoints_from_dns(network_type nettype = MAINNET);
 
  private:
    std::map<uint64_t, crypto::hash> m_points; 
    std::map<uint64_t, difficulty_type> m_difficulty_points; 
  };
 
}